Inverter Temperature

What does 301 mean?

This status code indicates that the internal temperature of the Fronius Primo GEN24 208-240 inverter is too high. This usually occurs due to insufficient cooling, high ambient temperatures, or a malfunction in the inverter's cooling system, leading to a potential derating or shutdown to prevent damage.

• Blocked or obstructed air vents on the inverter, impeding proper airflow.
• Ambient temperature at the inverter's installation location is excessively high.
• Insufficient clearance around the inverter, preventing adequate heat dissipation.
• A defect in the inverter's internal cooling fan or thermal management system.

Click steps to track your progress.

1. 1

   Inspect the inverter's air vents for any blockages, dust accumulation, or debris and clean them if necessary.

2. 2

   Measure the ambient temperature at the inverter's location and ensure it is within the specified operating limits.

3. 3

   Verify that there is sufficient clearance (as per manual specifications) around the inverter to allow for proper airflow and cooling.

4. 4

   De-energize the inverter (switch off AC and DC disconnects), wait for 5 minutes, then re-energize to reset. If the message persists, the inverter may require service.